Articles | Volume 12, issue 1
https://doi.org/10.5194/cp-12-115-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-12-115-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
22 Jan 2016
Research article |
| 22 Jan 2016
Laurentide Ice Sheet basal temperatures during the last glacial cycle as inferred from borehole data
C. Pickler
GEOTOP, Centre de Recherche en Géochimie et en Géodynamique, Université du Québec à Montréal, Québec, Canada
Climate & Atmospheric Sciences Institute and Department of Earth Sciences, St. Francis Xavier University, Antigonish, Nova Scotia, Canada
Centre ESCER pour l'étude et la simulation du climat à l'échelle régionale, Université du Québec à Montréal, Québec, Canada
J.-C. Mareschal
GEOTOP, Centre de Recherche en Géochimie et en Géodynamique, Université du Québec à Montréal, Québec, Canada
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H. Beltrami, G. S. Matharoo, L. Tarasov, V. Rath, and J. E. Smerdon
Clim. Past, 10, 1693–1706, https://doi.org/10.5194/cp-10-1693-2014, https://doi.org/10.5194/cp-10-1693-2014, 2014
P. Ortega, M. Montoya, F. González-Rouco, H. Beltrami, and D. Swingedouw
Clim. Past, 9, 547–565, https://doi.org/10.5194/cp-9-547-2013, https://doi.org/10.5194/cp-9-547-2013, 2013
Related subject area
Subject: Continental Surface Processes | Archive: Terrestrial Archives | Timescale: Holocene
Holocene environmental and climate evolution of central west Patagonia as reconstructed from lacustrine sediments of Meseta Chile Chico (46.5° S, Chile)
Moss kill dates and modeled summer temperature track episodic snowline lowering and ice cap expansion in Arctic Canada through the Common Era
Missing sea level rise in southeastern Greenland during and since the Little Ice Age
Reconstructing burnt area during the Holocene: an Iberian case study
Expression of the “4.2 ka event” in the southern Rocky Mountains, USA
Arctic glaciers and ice caps through the Holocene:a circumpolar synthesis of lake-based reconstructions
Stalagmite carbon isotopes suggest deglacial increase in soil respiration in western Europe driven by temperature change
Climate-driven desertification and its implications for the ancient Silk Road trade
Diatom-oxygen isotope record from high-altitude Lake Petit (2200 m a.s.l.) in the Mediterranean Alps: shedding light on a climatic pulse at 4.2 ka
Episodic Neoglacial expansion and rapid 20th century retreat of a small ice cap on Baffin Island, Arctic Canada, and modeled temperature change
Climate trends in northern Ontario and Québec from borehole temperature profiles
Interactions between climate change and human activities during the early to mid-Holocene in the eastern Mediterranean basins
Evidence of a prolonged drought ca. 4200 yr BP correlated with prehistoric settlement abandonment from the Gueldaman GLD1 Cave, Northern Algeria
Glacier response to North Atlantic climate variability during the Holocene
Climatic variability and human impact during the last 2000 years in western Mesoamerica: evidence of late Classic (AD 600–900) and Little Ice Age drought events
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Numerical studies on the Impact of the Last Glacial Cycle on recent borehole temperature profiles: implications for terrestrial energy balance
Holocene climate change, permafrost and cryogenic carbonate formation: insights from a recently deglaciated, high-elevation cave in the Austrian Alps
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Holocene changes in African vegetation: tradeoff between climate and water availability
Orbital changes, variation in solar activity and increased anthropogenic activities: controls on the Holocene flood frequency in the Lake Ledro area, Northern Italy
Mass-movement and flood-induced deposits in Lake Ledro, southern Alps, Italy: implications for Holocene palaeohydrology and natural hazards
A Late Glacial to Holocene record of environmental change from Lake Dojran (Macedonia, Greece)
Bunker Cave stalagmites: an archive for central European Holocene climate variability
Temperature variability at Dürres Maar, Germany during the Migration Period and at High Medieval Times, inferred from stable carbon isotopes of Sphagnum cellulose
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Gifford H. Miller, Simon L. Pendleton, Alexandra Jahn, Yafang Zhong, John T. Andrews, Scott J. Lehman, Jason P. Briner, Jonathan H. Raberg, Helga Bueltmann, Martha Raynolds, Áslaug Geirsdóttir, and John R. Southon
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Sarah A. Woodroffe, Leanne M. Wake, Kristian K. Kjeldsen, Natasha L. M. Barlow, Antony J. Long, and Kurt H. Kjær
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Salt marsh in SE Greenland records sea level changes over the past 300 years in sediments and microfossils. The pattern is rising sea level until ~ 1880 CE and sea level fall since. This disagrees with modelled sea level, which overpredicts sea level fall by at least 0.5 m. This is the same even when reducing the overall amount of Greenland ice sheet melt and allowing for more time. Fitting the model to the data leaves ~ 3 mm yr−1 of unexplained sea level rise in SE Greenland since ~ 1880 CE.
Yicheng Shen, Luke Sweeney, Mengmeng Liu, Jose Antonio Lopez Saez, Sebastián Pérez-Díaz, Reyes Luelmo-Lautenschlaeger, Graciela Gil-Romera, Dana Hoefer, Gonzalo Jiménez-Moreno, Heike Schneider, I. Colin Prentice, and Sandy P. Harrison
Clim. Past, 18, 1189–1201, https://doi.org/10.5194/cp-18-1189-2022, https://doi.org/10.5194/cp-18-1189-2022, 2022
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We present a method to reconstruct burnt area using a relationship between pollen and charcoal abundances and the calibration of charcoal abundance using modern observations of burnt area. We use this method to reconstruct changes in burnt area over the past 12 000 years from sites in Iberia. We show that regional changes in burnt area reflect known changes in climate, with a high burnt area during warming intervals and low burnt area when the climate was cooler and/or wetter than today.
David T. Liefert and Bryan N. Shuman
Clim. Past, 18, 1109–1124, https://doi.org/10.5194/cp-18-1109-2022, https://doi.org/10.5194/cp-18-1109-2022, 2022
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A large drought potentially occurred roughly 4200 years ago, but its impacts and significance are unclear. We find new evidence in carbonate oxygen isotopes from a mountain lake in southeastern Wyoming, southern Rocky Mountains, of an abrupt reduction in effective moisture (precipitation–evaporation) or snowpack from approximately 4200–4000 years ago. The drought's prominence among a growing number of sites in the North American interior suggests it was a regionally substantial climate event.
Laura J. Larocca and Yarrow Axford
Clim. Past, 18, 579–606, https://doi.org/10.5194/cp-18-579-2022, https://doi.org/10.5194/cp-18-579-2022, 2022
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This paper synthesizes 66 records of glacier variations over the Holocene from lake archives across seven Arctic regions. We find that summers only moderately warmer than today drove major environmental change across the Arctic in the early Holocene, including the widespread loss of glaciers. In comparison, future projections of Arctic temperature change far exceed estimated early Holocene values in most locations, portending the eventual loss of most of the Arctic's small glaciers.
Franziska A. Lechleitner, Christopher C. Day, Oliver Kost, Micah Wilhelm, Negar Haghipour, Gideon M. Henderson, and Heather M. Stoll
Clim. Past, 17, 1903–1918, https://doi.org/10.5194/cp-17-1903-2021, https://doi.org/10.5194/cp-17-1903-2021, 2021
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Soil respiration is a critical but poorly constrained component of the global carbon cycle. We analyse the effect of changing soil respiration rates on the stable carbon isotope ratio of speleothems from northern Spain covering the last deglaciation. Using geochemical analysis and forward modelling we quantify the processes affecting speleothem stable carbon isotope ratios and extract a signature of increasing soil respiration synchronous with deglacial warming.
Guanghui Dong, Leibin Wang, David Dian Zhang, Fengwen Liu, Yifu Cui, Guoqiang Li, Zhilin Shi, and Fahu Chen
Clim. Past, 17, 1395–1407, https://doi.org/10.5194/cp-17-1395-2021, https://doi.org/10.5194/cp-17-1395-2021, 2021
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A compilation of the results of absolute dating and high-resolution paleoclimatic records from the Xishawo site in the Dunhuang area and historical archives reveals that two desertification events occurred at ~ 800–600 BCE and ~ 1450 CE. The later desertification event was consistent with the immediate fall in tribute trade that occurred in ~ 1450 CE, which indicates that climate change played a potentially important role in explaining the decline of the Ancient Silk Road trade.
Rosine Cartier, Florence Sylvestre, Christine Paillès, Corinne Sonzogni, Martine Couapel, Anne Alexandre, Jean-Charles Mazur, Elodie Brisset, Cécile Miramont, and Frédéric Guiter
Clim. Past, 15, 253–263, https://doi.org/10.5194/cp-15-253-2019, https://doi.org/10.5194/cp-15-253-2019, 2019
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A major environmental change, 4200 years ago, was recorded in the lacustrine sediments of Lake Petit (Mediterranean Alps). The regime shift was described by a modification in erosion processes in the watershed and aquatic species in the lake. This study, based on the analysis of the lake water balance by using oxygen isotopes in diatoms, revealed that these environmental responses were due to a rapid change in precipitation regime, lasting ca. 500 years.
Simon L. Pendleton, Gifford H. Miller, Robert A. Anderson, Sarah E. Crump, Yafang Zhong, Alexandra Jahn, and Áslaug Geirsdottir
Clim. Past, 13, 1527–1537, https://doi.org/10.5194/cp-13-1527-2017, https://doi.org/10.5194/cp-13-1527-2017, 2017
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Recent warming in the high latitudes has prompted the accelerated retreat of ice caps and glaciers, especially in the Canadian Arctic. Here we use the radiocarbon age of preserved plants being exposed by shrinking ice caps that once entombed them. These ages help us to constrain the timing and magnitude of climate change on southern Baffin Island over the past ~ 2000 years. Our results show episodic cooling up until ~ 1900 CE, followed by accelerated warming through present.
Carolyne Pickler, Hugo Beltrami, and Jean-Claude Mareschal
Clim. Past, 12, 2215–2227, https://doi.org/10.5194/cp-12-2215-2016, https://doi.org/10.5194/cp-12-2215-2016, 2016
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Jean-Francois Berger, Laurent Lespez, Catherine Kuzucuoğlu, Arthur Glais, Fuad Hourani, Adrien Barra, and Jean Guilaine
Clim. Past, 12, 1847–1877, https://doi.org/10.5194/cp-12-1847-2016, https://doi.org/10.5194/cp-12-1847-2016, 2016
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This paper focuses on early Holocene rapid climate changes in the Mediterranean zone, which are under-represented in continental archives, and on their impact on prehistoric societies from the eastern to central Mediterranean (central Anatolia, Cyprus, NE and NW Greece). Our study demonstrates the reality of hydrogeomorphological responses to early Holocene RCCs in valleys and alluvial fans and lake–marsh systems. We finally question their socio-economic and geographical adaptation capacities.
J. Ruan, F. Kherbouche, D. Genty, D. Blamart, H. Cheng, F. Dewilde, S. Hachi, R. L. Edwards, E. Régnier, and J.-L. Michelot
Clim. Past, 12, 1–14, https://doi.org/10.5194/cp-12-1-2016, https://doi.org/10.5194/cp-12-1-2016, 2016
N. L. Balascio, W. J. D'Andrea, and R. S. Bradley
Clim. Past, 11, 1587–1598, https://doi.org/10.5194/cp-11-1587-2015, https://doi.org/10.5194/cp-11-1587-2015, 2015
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Sediment cores were collected from a lake that captures runoff from two glaciers in Greenland. Our analysis of the sediments shows that these glaciers were active over the last 9,000 years and advanced and retreated in response to regional climate changes. The data also provide a long-term perspective on the rate of 20th century glacier retreat and indicate that recent anthropogenic-driven warming has already impacted the regional cryosphere in a manner outside the range of natural variability.
A. Rodríguez-Ramírez, M. Caballero, P. Roy, B. Ortega, G. Vázquez-Castro, and S. Lozano-García
Clim. Past, 11, 1239–1248, https://doi.org/10.5194/cp-11-1239-2015, https://doi.org/10.5194/cp-11-1239-2015, 2015
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We present results from western Mexico, where very few palaeoclimatic research sites exist. The record has good chronological resolution (ca. 20 years) and clear climatic trends during the last 2ka. The most important signals are: dry conditions during the late Classic (AD 500 to 1000), especially from AD 600 to 800, and low lake levels during the LIA, in two phases that follow Spörer and Maunder solar minima. Drier conditions are related with a lower intensity of the North American monsoon.
S. Albani, N. M. Mahowald, G. Winckler, R. F. Anderson, L. I. Bradtmiller, B. Delmonte, R. François, M. Goman, N. G. Heavens, P. P. Hesse, S. A. Hovan, S. G. Kang, K. E. Kohfeld, H. Lu, V. Maggi, J. A. Mason, P. A. Mayewski, D. McGee, X. Miao, B. L. Otto-Bliesner, A. T. Perry, A. Pourmand, H. M. Roberts, N. Rosenbloom, T. Stevens, and J. Sun
Clim. Past, 11, 869–903, https://doi.org/10.5194/cp-11-869-2015, https://doi.org/10.5194/cp-11-869-2015, 2015
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We propose an innovative framework to organize paleodust records, formalized in a publicly accessible database, and discuss the emerging properties of the global dust cycle during the Holocene by integrating our analysis with simulations performed with the Community Earth System Model. We show how the size distribution of dust is intrinsically related to the dust mass accumulation rates and that only considering a consistent size range allows for a consistent analysis of the global dust cycle.
H. Beltrami, G. S. Matharoo, L. Tarasov, V. Rath, and J. E. Smerdon
Clim. Past, 10, 1693–1706, https://doi.org/10.5194/cp-10-1693-2014, https://doi.org/10.5194/cp-10-1693-2014, 2014
C. Spötl and H. Cheng
Clim. Past, 10, 1349–1362, https://doi.org/10.5194/cp-10-1349-2014, https://doi.org/10.5194/cp-10-1349-2014, 2014
A. E. Mehl and M. A. Zárate
Clim. Past, 10, 863–875, https://doi.org/10.5194/cp-10-863-2014, https://doi.org/10.5194/cp-10-863-2014, 2014
C. Hély, A.-M. Lézine, and APD contributors
Clim. Past, 10, 681–686, https://doi.org/10.5194/cp-10-681-2014, https://doi.org/10.5194/cp-10-681-2014, 2014
B. Vannière, M. Magny, S. Joannin, A. Simonneau, S. B. Wirth, Y. Hamann, E. Chapron, A. Gilli, M. Desmet, and F. S. Anselmetti
Clim. Past, 9, 1193–1209, https://doi.org/10.5194/cp-9-1193-2013, https://doi.org/10.5194/cp-9-1193-2013, 2013
A. Simonneau, E. Chapron, B. Vannière, S. B. Wirth, A. Gilli, C. Di Giovanni, F. S. Anselmetti, M. Desmet, and M. Magny
Clim. Past, 9, 825–840, https://doi.org/10.5194/cp-9-825-2013, https://doi.org/10.5194/cp-9-825-2013, 2013
A. Francke, B. Wagner, M. J. Leng, and J. Rethemeyer
Clim. Past, 9, 481–498, https://doi.org/10.5194/cp-9-481-2013, https://doi.org/10.5194/cp-9-481-2013, 2013
J. Fohlmeister, A. Schröder-Ritzrau, D. Scholz, C. Spötl, D. F. C. Riechelmann, M. Mudelsee, A. Wackerbarth, A. Gerdes, S. Riechelmann, A. Immenhauser, D. K. Richter, and A. Mangini
Clim. Past, 8, 1751–1764, https://doi.org/10.5194/cp-8-1751-2012, https://doi.org/10.5194/cp-8-1751-2012, 2012
R. Moschen, N. Kühl, S. Peters, H. Vos, and A. Lücke
Clim. Past, 7, 1011–1026, https://doi.org/10.5194/cp-7-1011-2011, https://doi.org/10.5194/cp-7-1011-2011, 2011
Cited articles
Beck, A.: Climatically perturbed temperature gradient and their effect on
regional and continental heat-flow means, Tectonophysics, 41, 17–39, 1977.
Beltrami, H. and Mareschal, J.: Resolution of ground temperautre histories
inverted from borehole temperature data, Global Planet. Change, 11,
57–70, 1995.
Beltrami, H., Cheng, L., and Mareschal, J. C.: Simultaneous inversion of
borehole temperature data for determination of ground surface temperature
history, Geophys. J. Int., 129, 311–318, 1997.
Birch, A. F.: The effects of Pleistocene climatic variations upon geothermal
gradients, Am. J. Sci., 246, 729–760, 1948.
Bodri, L. and Cermak, V.: Borehole Climatology, Elsevier, Amsterdam, 2007.
Boudreau, R., Galloway, J., Patterson, R., Kumar, A., and Michel, F.: A
paleolimnological record of Holocene climate and environmental change in the
Temagami region, northeastern Ontario, J. Paleolimnol., 33,
445–461, 2005.
Bullard, E.: Heat Flow in South Africa, P. Roy. Soc. Lond.
A, 173, 474–502, 1939.
Carlson, A. E., LeGrande, A. N., Oppo, D. W., Came, R. E., Schmidt, G. A.,
Anslow, F. S., Licciardi, J. M., and Obbink, E. A.: Rapid early Holocene
deglaciation of the Laurentide ice sheet, Nat. Geosci., 1, 620–624, 2008.
Carslaw, H. and Jaeger, J.: Conduction of Heat in Solids, Oxford Science
Publications, New York, 1959.
Cermak, V.: Underground temperature and inferred climatic temperature of the
past millenium, Palaeogeogr. Palaeocl., 10, 1–19,
1971.
Chouinard, C. and Mareschal, J.-C.: Ground surface temperature history in
southern Canada: Temperatures at the base of the Laurentide ice sheet and
during the Holocene, Earth Planet. Sc. Lett., 277, 280–289,
https://doi.org/10.1016/j.epsl.2008.10.026, 2009.
Church, J. A., White, N. J., Konikow, L. F., Domingues, C. M., Cogley, J. G.,
Rignot, E., Gregory, J. M., van den Broeke, M. R., Monaghan, A. J., and
Velicogna, I.: Revisiting the Earth's sea-level and energy budgets from 1961
to 2008, Geophys. Res. Lett., 38, L18601, https://doi.org/10.1029/2011GL048794, 2011.
Clark, P. U.: Unstable behavior of the Laurentide Ice Sheet over deforming
sediment and its implications for climate change, Quaternary Res., 41,
19–25, 1994.
Clark, P. U. and Pollard, D.: Origin of the Middle Pleistocene Transition by
ice sheet erosion of regolith, Paleoceanography, 13, 1–9, 1998.
Clark, P. U., Alley, R. B., and Pollard, D.: Northern Hemisphere Ice-Sheet
Influences on Global Climate Change, Science, 286, 1104–1111, 1999.
Clauser, C. and Mareschal, J.-C.: Ground temperature history in central Europe
from borehole temperature data, Geophys. J. Int., 121,
805–817, 1995.
Dahl-Jensen, D., Mosegaard, K., Gundestrup, N., Clow, G. D., Johnsen, S. J.,
Hansen, A. W., and Balling, N.: Past Temperatures Directly from the Greenland
Ice Sheet, Science, 282, 268–271, 1998.
Davis, M., Douglas, C., Calcote, R., Cole, K., Green Winkler, M., and Flakne,
R.: Holocene climate in the Western Great Lakes national park and lakeshores:
implications for future climate change, Conserv. Biol., 14, 968–983,
2000.
Demezhko, D. Y. and Gornostaeva, A. A.: Late Pleistocene-Holocene ground
surface heat flux changes reconstructed from borehole temperature data (the
Urals, Russia), Clim. Past, 11, 647–652, https://doi.org/10.5194/cp-11-647-2015, 2015.
Demezhko, D. and Shchapov, V.: 80,000 years ground surface temperature history
inferred from the temperature-depth log measured in the superdeep hole SG-4
(the Urals, Russia), Global Planet. Change, 20, 219–230, 2001.
Demezhko, D. Y., Gornostaeva, A. A., Tarkhanov, G. V., and Esipko, O. A.:
30,000 years of ground surface temperature and heat flux changes in Karelia
reconstructed from borehole temperature data, Bulletin of Geography. Physical
Geography Series, 6, 7–25, 2013.
Denton, G. and Hughes, T., (Eds.): The Last Great Ice Sheets,
Wiley-Interscience, New York, 1981.
Dyke, A., Andrews, J., Clark, P., England, J., Miller, G., Shaw, J., and
Veillette, J.: The Laurentide and Innuitian ice sheets during the Last
Glacial Maximum, Quaternary Sci. Rev., 21, 9–31,
https://doi.org/10.1016/S0277-3791(01)00095-6, 2002.
Fahnestock, M., Abdalati, W., Luo, S., and Gogineni, S.: Internal layer tracing
and age-depth-accumulation relationships for the northern Greenland ice
sheet, J. Geophys. Res.-Atmos., 106,
33789–33797, 2001.
Gomez, N., Mitrovica, J. X., Tamisiea, M. E., and Clark, P. U.: A new
projection of sea level change in response to collapse of marine sectors of
the Antarctic Ice Sheet, Geophys. J. Int., 180, 623–634,
2010.
Gosnold, W., Majorowicz, J., Klenner, R., and Hauck, S.:
Implications for Post-Glacial Warming for Northern Hemisphere Heat Flow, GRC Transactions, 35, 795–799,
2011.
Greve, R.: Relation of measured basal temperatures and the spatial distribution
of the geothermal heat flux for the Greenland ice sheet, Ann.
Glaciol., 42, 424–432, 2005.
Guillou-Frottier, L., Jaupart, C., Mareschal, J. C., Gariépy, C., Bienfait,
G., Cheng, L. Z., and Lapointe, R.: High heat flow in the trans-Hudson
Orogen, Central Canadian Shield, Geophys. Res. Lett., 23,
3027–3030, https://doi.org/10.1029/96GL02895, 1996.
Hansen, J. and Lebedeff, S.: Global trends of measured
air-surface temperature, J. Geophys. Res., 92, 345–413, 1987.
Hotchkiss, W. and Ingersoll, L.: Post-glacial time calculations from recent
geothermal measurements in the Calumet Copper Mines, J. Geol., 42,
113–142, 1934.
Hughes, T.: Modeling ice sheets from the bottom up, Quaternary Sci. Rev.,
28, 1831–1849, 2009.
Jackson, D.: Interpretation of inaccurate, insufficient, and inconsistent data,
Geophys. J. Int., 28, 97–110, 1972.
Jaupart, C. and Mareschal, J.-C.: Heat generation and transport in the Earth,
Cambridge University Press, Cambridge, UK, 2011.
Jaupart, C., Mareschal, J., Bouquerel, H., and Phaneuf, C.: The building and
stabilization of an Archean Craton in the Superior Province, Canada, from a
heat flow perspective, J. Geophys. Res.-Sol. Ea., 119,
9130–9155, 2014.
Jessop, A.: The Distribution of Glacial Perturbation of Heat Flow in Canada,
Can. J. Earth Sci., 8, 162–166, 1971.
Joughin, I., Smith, B., and Medley, B.: Marine Ice Sheet Collapse Potentially
Under Way for the Thwaites Glacier Basin, West Antarctica, Science, 344,
735–738, 2014.
Kukkonen, I. T. and Jõeleht, A.: Weichselian temperatures from geothermal
heat flow data, J. Geophys. Res.-Sol. Ea., 108,
https://doi.org/10.1029/2001JB001579, 2003.
Lachenbruch, A. and Marshall, B.: Changing climate: Geothermal evidence from
permafrost in the Alaskan Arctic, Science, 234, 689–696, 1986.
Lachenbruch, A. H.: Permafrost, the active layer and changing climate, Global
Planet. Change, 29, 259–273, 1988.
Lamb, H.: Climate, History and the Modern World, Routledge, 2 Edn., New York, NY, 387 pp.,
1995.
Lanczos, C.: Linear Differential Operators, D. Van Nostrand, Princeton, N.
J.,
1961.
Lévy, F., Jaupart, C., Mareschal, J.-C., Bienfait, G., and Limare, A.: Low
heat flux and large variations of lithospheric thickness in the Canadian
Shield, J. Geophys. Res.-Sol. Ea., 115, B06404,
https://doi.org/10.1029/2009JB006470, 2010.
Llubes, M., Lanseau, C., and Rémy, F.: Relations between basal condition,
subglacial hydrological networks and geothermal flux in Antarctica, Earth
Planet. Sc. Lett., 241, 655–662, 2006.
Majorowicz, J. and Šafanda, J.: Effect of postglacial warming seen in
high precision temperature log deep into the granites in NE Alberta,
Int. J. Earth Sci., 104, 1563–1571, 2015.
Majorowicz, J., Šafanda, J., and Torun-1 Working Group: Heat flow variation
with depth in Poland: evidence from equilibrium temperature logs in
2.9-km-deep well Torun-1, Int. J. Earth Sci., 97,
307–315, 2008.
Majorowicz, J., Chan, J., Crowell, J., Gosnold, W., Heaman, L. M., Kück,
J., Nieuwenhuis, G., Schmitt, D. R., Unsworth, M., Walsh, N., and Weides, S.:
The first deep heat flow determination in crystalline basement rocks beneath the
Western Canadian Sedimentary Basin, Geophys. J. Int., 197,
731–747, 2014.
Mareschal, J.-C. and Beltrami, H.: Evidence for recent warming from perturbed
geothermal gradients: examples from eastern Canada, Clim. Dynam., 6,
135–143, https://doi.org/10.1007/BF00193525, 1992.
Mareschal, J. C., Pinet, C., Gariépy, C., Jaupart, C., Bienfait,
G., Coletta, G. D., Jolivet, J., and Lapointe, R.: New heat flow
density and radiogenic heat production data in the Canadian Shield and the
Quebec Appalachians, Can. J. Earth Sci., 26, 845–852,
https://doi.org/10.1139/e89-068, 1989.
Mareschal, J. C., Jaupart, C., Cheng, L. Z., Rolandone, F., Gariépy, C.,
Bienfait, G., Guillou-Frottier, L., and Lapointe, R.: Heat flow in the
Trans-Hudson Orogen of the Canadian Shield: Implications for Proterozoic
continental growth, J. Geophys. Res., 104, 7–29,
1999a.
Mareschal, J.-C., Rolandone, F., and Bienfait, G.: Heat flow variations in a
deep borehole near Sept-Iles, Québec, Canada: Paleoclimatic
interpretation and implications for regional heat flow estimates, Geophys.
Res. Lett., 26, 2049–2052, https://doi.org/10.1029/1999GL900489,
1999b.
Marshall, S.: Recent advances in understanding ice sheet dynamics, Earth
Planet. Sc. Lett., 240, 191–204, 2005.
Marshall, S. and Clark, P.: Basal tempeature evolution of North American ice
sheets and implications for the 100-kyr cycle, Geophys. Res. Lett.,
29, 67-1–67-4, 2002.
Menke, W.: Geophysical Data Analysis: Discrete Inverse Theory, vol. 4, Academic
Press, San Diego, 1989.
Misener, A. and Beck, A.: The measurement of heat flow over land, Interscience,
New York, 1960.
Mitrovica, J. X., Gomez, N., and Clark, P. U.: The Sea-Level Fingerprint of
West Antarctic Collapse, Science, 323, 753–753, 2009.
Nielsen, S. and Beck, A.: Heat flow density values and paleoclimate determined
from stochastic inversion of four temperature-depth profiles from the
Superior Province of the Canadian Shield, Tectonophysics, 164, 345–359,
https://doi.org/10.1016/0040-1951(89)90026-7, 1989.
Oerlemans, J. and van der Veen, C.: Ice Sheets and Climate, D. Reidel
Publishing Company, Dordrecht, Boston, Lancaster, 1984.
Pattyn, F.: Antarctic subglacial conditions inferred from a hybrid ice
sheet/ice stream model, Earth Planet. Sc. Lett., 295, 451–461,
2010.
Peltier, W.: Global glacial isostasy and the surface of the ice-age Earth: The
ICE-5G (VM2) Model and GRACE, Annual Review of Earth and Planetary Sciences,
32, 111–149, https://doi.org/10.1146/annurev.earth.32.082503.144359, 2004.
Peltier, W. R.: Global glacial isostatic adjustment: palaeogeodetic and
space-geodetic tests of the ICE-4G (VM2) model, J. Quaternary
Sci., 17, 491–510, https://doi.org/10.1002/jqs.713, 2002.
Perry, H., Jaupart, C., Mareschal, J., and Bienfait, G.: Crustal heat
production in the Superior Province, Canadian Shield, and in North America
inferred from heat flow data, J. Geophys. Res.-Sol. Ea.,
111, B04401, https://doi.org/10.1029/2005JB003893, 2006.
Perry, H., Mareschal, J. C., and Jaupart, C.: Enhanced crustal geo-neutrino
production near the Sudbury Neutrino Observatory, Ontario, Canada, Earth
Planet. Sc. Lett., 288, 301–308, 2009.
Pollard, D., DeConto, R., and Nyblabe, A.: Sensitivity of Cenozoic Antarctic
ice sheet variations to geothermal heat flux, Global Planet. Change,
49, 63–74, 2005.
Pritchard, H. D., Ligtenberg, S. R. M., Fricker, H. A., Vaughan, D. G., van den
Broeke, M. R., and Padman, L.: Antarctic ice-sheet loss driven by basal
melting of ice shelves, Nature, 484, 502–505, 2012.
Rignot, E., Mouginot, J., Morlighem, M., Seroussi, H., and
Scheuchl, B.:
Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith, and
Kohler glaciers, West Antarctica, from 1992 to 2011, Geophys. Res.
Lett., 41, 3502–3509, https://doi.org/10.1002/2014GL060140, 2014.
Rolandone, F., Jaupart, C., Mareschal, J., Gariépy, C., Bienfait, G.,
Carbonne, C., and Lapointe, R.: Surface heat flow, crustal temperatures and
mantle heat flow in the Proterozoic Trans-Hudson Orogen, Canadian Shield,
J. Geophys. Res.-Sol. Ea., 107, 1978–2012, 2002.
Rolandone, F., Mareschal, J., Jaupart, C., Gosselin, C., Bienfait, G., and
Lapointe, R.: Heat flow in the western Superior Province of the Canadian
Shield, Geophys. Res. Lett., 30, https://doi.org/10.1029/2003GL017386, 2003a.
Rolandone, F., Mareschal, J.-C., and Jaupart, C.:
Temperatures at the base of
the Laurentide Ice Sheet inferred from borehole temperature data, Geophys.
Res. Lett., 30,
https://doi.org/10.1029/2003GL018046, 2003b.
Šafanda, J., Szewczyk, J., and Majorowicz, J.: Geothermal evidence of
very low glacial temperatures on a rim of the Fennoscandian ice sheet,
Geophys. Res. Lett., 31, L07211, https://doi.org/10.1029/2004GL019547, 2004.
Sass, J. H., Lachenbruch, A. H., and Jessop, A. M.: Uniform heat flow in a deep
hole in the Canadian Shield and its paleoclimatic implications, J.
Geophys. Res., 76, 8586–8596, https://doi.org/10.1029/JB076i035p08586, 1971.
Schneider, D. P., Steig, E. J., van Ommen, T. D., Dixon, D. A., Mayewski,
P. A., Jones, J. M., and Bitz, C. M.: Antarctic temperatures over the past
two centuries from ice cores, Geophys. Res. Lett., 33, L16707,
https://doi.org/10.1029/2006GL027057, 2006.
Shen, P. Y. and Beck, A. E.: Determination of surface temperature history from
borehole temperature gradients, J. Geophys. Res.-Sol. Ea.,
88, 7485–7493, https://doi.org/10.1029/JB088iB09p07485, 1983.
Shen, P. Y. and Beck, A. E.: Least squares inversion of borehole temperature
measurements in functional space, J. Geophys. Res.-Sol.
Ea., 96, 19965–19979, https://doi.org/10.1029/91JB01883, 1991.
Straneo, F. and Heimbach, P.: North Atlantic warming and the retreat of
Greenland's outlet glaciers, Science, 504, 36–43, 2013.
Vasseur, G., Bernard, P., de Meulebrouck, J. V., Kast, Y., and Jolivet, J.:
Holocene paleotemperatures deduced from geothermal measurements,
Palaeogeography, Palaeoclimatology, Palaeoecology, 43, 237–259,
https://doi.org/10.1016/0031-0182(83)90013-5, 1983.
Velicogna, I. and Wahr, J.: Time-variable gravity observations of ice sheet
mass balance: Precision and limitations of the GRACE satellite data,
Geophys. Res. Lett., 40, 3055–3063, https://doi.org/10.1002/grl.50527, 2013.
Wang, K.: Estimation of ground surface temperatures from borehole temperature
data, J. Geophys. Res.-Sol. Ea., 97, 2095–2106,
https://doi.org/10.1029/91JB02716, 1992.
Zwally, H. J., Abdalati, W., Herring, T., Larson, K., Saba, J., and Steffen,
K.: Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow, Science,
297, 218–22, 2002.
Zweck, C. and Huybrechts, P.: Modeling of the northern hemisphere ice sheets
during the last glacial cycle and glaciological sensitivity, J.
Geophys. Res., 110, 1984–2012, 2005.
